-Understand the reaction mechanisms for the synthesis of polystyrene (how does radical formationstart, and how does the polymer chain become elongated?) as well as the mechanism for nylonformation (how does the reaction between the diacid chloride and the diamine produce a polymerchain?).

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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What is/are the products from the given radical substitution reaction? Note: show the mechanism of the reaction. NBS =CH₂ 7 hy
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Plywood and particle board are often glued with cheap, waterproof urea-formaldehyde resins. Two to three moles of formaldehyde are mixed with one mole of urea and a little ammonia as a basic catalyst. The reaction is allowed to proceed until the mixture becomes syrupy, and then it is applied to the wood surface. The wood surfaces are held together under heat and pressure, while polymerization continues and cross-linking takes place. Propose a mechanism for the base-catalyzed condensation of urea with formaldehyde to give a linear polymer, and then show how further condensation leads to cross-linking.
QUESTION1: (this is the full question however can you answer part c,e and f) Methyl methacrylate is polymerized by free radical polymerization at 70 oC to form long polymer chains.(a) Draw the chemical structure of methyl methacrylate, define its molecular formula and molecular weight (in g/mol). (b) If benzoyl peroxide is used as the initiator for the polymerization of methyl methacrylate please write the chemical structures of the compounds formed during the initiation step ofthe polymerization. What would happen if the reaction is not heated at 70 oC? (c) Write the chemical structures of the polymers formed during the propagation and termination steps of the polymerization. (d) Write the trade name of the polymer formed by the polymerization of methyl methacrylate and two of its common applications. (e) If a polymer with degree of polymerization 100 is synthesized during the reaction, determine its molecular weight (in g/mol). (f) If from the polymerization of methyl methacrylate a…
Consider the fluorination and bromination of methane by the free radical mechanism.Making use of bond energies discuss the thermodynamic favorability (free energy change) of the two reactions.
1.- Why are carbon nanotubes and graphene currently considered as reinforcing additives for polymers? What effect do they have on the polymer? What is the mechanism by which they can enhance the Young’s modulus and tensile strength of a polymer? 2.- Kapton is the trade name of a polyimide a) How would you synthesize this polymer? b) During the first stage of the reaction, poly(amic acid) is formed. If you need to follow this stage of the polymerization, what spectroscopic techniques would you use and what groups should you focus on? c) How would you form Kapton films, which can be used as support for solar sails? d) What are the disadvantages of Kapton that have limited their use? Why does this polymer present this weakness?

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-Understand the reaction mechanisms for the synthesis of polystyrene (how does radical formation start, and how does the polymer chain become elongated?) as well as the mechanism for nylon formation (how does the reaction between the diacid chloride and the diamine produce a polymer chain?).